What is the angular momentum of a rod with a mass of #5 kg# and length of #4 m# that is spinning around its center at # 2 1 Hz#?

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Answer 1 · 2017-08-08T12:10:35

The angular momentum is #=879.6kgm^2s^-1#

The angular momentum is #L=Iomega#

The moment of inertia of a rod, rotating about the center is

#I=1/12*mL^2#

#=1/12*5*4^2= 20/3 kgm^2#

The angular velocity is

#omega=2pif=2*21pi=42pirads^-1#

The angular velocity is

#L=20/3*42pi=879.6kgm^2s^-1#